An electrolytic detector is a special kind of machine that helps us catch signals that are really hard to hear otherwise. Imagine you are in a big, noisy park and your friend is trying to talk to you from far away. It's really hard to hear them, right? But if you use a megaphone, it becomes easier because the sound is louder. That's what an electrolytic detector does!
It's made up of a special kind of battery that has two different metals in it. These metals are connected by a special liquid that can carry electric current. When a very weak signal passes through the machine, it causes the liquid to change in a way that makes the electric current stronger. It's like a chain reaction: the weak signal becomes stronger and easier to hear.
So, when we use an electrolytic detector, it makes it easier to listen to signals that we couldn't hear before. This machine is used for things like listening to radio signals, or finding tiny electrical currents that might be in the body. It's very helpful because it can help us find important information that we wouldn't be able to find otherwise.